Just hang this code onto the bottom of your style.css file and it’ll be dandy.

p.menulink {
margin-bottom: 0;
}

If you do not want the gap to be that small, change 0 to #px (there must be no gap between the number and the px!).

Incidentally, I don’t know what your control of the situation is but that site is not particularly pleasant HTML. You have tables in tables in tables, for god’s sake! What you’re doing in the sidebar could be so much easier done using a <ul> element. Are you using Frontpage or something?

Please, it’ll be much less work for you if you use clean HTML; at least in future! Tables are so very rarely a good solution.